Bump ruamel-yaml from 0.17.35 to 0.18.5 #2756

Job	Run time
Create Example List	8s
Run Example: (fluorescence)	1m 21s
Run Example: (transient-absorption)	2m 57s
Run Example: (transient-absorption-two-datasets)	2m 59s
Run Example: (spectral-constraints)	1m 34s
Run Example: (spectral-guidance)	1m 37s
Run Example: (two-datasets)	1m 54s
Run Example: (sim-3d-disp)	2m 19s
Run Example: (sim-3d-nodisp)	4m 5s
Run Example: (sim-3d-weight)	3m 56s
Run Example: (sim-6d-disp)	4m 28s
Run Example: (doas-beta)	3m 48s
Compare Results	46s
	31m 52s

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